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Re^5: Need to turn off prints from module

by kcott (Abbot)
on Nov 17, 2010 at 23:40 UTC ( #872093=note: print w/ replies, xml ) Need Help??


in reply to Re^4: Need to turn off prints from module
in thread Need to turn off prints from module

For my tests, I used the problem string you posted then added three more from browsers I had handy on my PC. I notice that the Firefox one you've now posted has "+" characters in every position that mine has spaces (ignoring a few minor variations in version numbers). I took mine directly from the browsers; it occurred to me that may yours are perhaps URL-encoded (while you can represent a space as hex %20, it can also just be converted to a plus-sign).

So, I added your latest problem string to my existing test list and changed:

$useragent =~ s{ ( [+] ) [[] [^]]+ []] ( [+] ) }{$1$2}msx;

to just:

$useragent =~ y{+}{ };

And it all worked! :-)

$ ver_overload_prob.pl UA: Mozilla/4.06+[en]+(WinNT;+I) Netscape 4.060 Windows NT UA: Opera/9.80 (Windows NT 5.1; U; en) Presto/2.6.30 Version/10.61 Opera 10.610 Windows XP UA: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.1.4) Gecko/ +20091016 Firefox/3.5.4 Firefox 3.005004 Windows XP UA: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.28 + (KHTML, like Gecko) Version/3.2.2 Safari/525.28.1 Safari 3.002002 Windows XP UA: Mozilla/5.0+(Windows;+U;+Windows+NT+5.1;+en-US;+rv:1.9.1.15)+Gecko +/20101026+Firefox/3.5.15+(.NET+CLR+3.5.30729) Firefox 3.005015 Windows XP

So, give that a go - it might be the solution.

If not, you can redirect STDERR (see open - example code is about halfway down the page) but you'll lose every error message by doing that and I really wouldn't recommend it.

In the _numify() routine (referenced in my last post) pluses are actually removed (see final alternation item):

$v =~ s{ pre | rel | alpha | beta | \-stable | gold | [ab]\d+ | a\-XXXX | \+ }{}xmsig;

So, if my solution works, you might want to post a bug report with the fix being:

$v =~ y{+}{ }; $v =~ s{ pre | rel | alpha | beta | \-stable | gold | [ab]\d+ | a\-XXXX }{}xmsig;

-- Ken


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